1 tune2fs ^metadata_csum test 2 Creating filesystem with 524288 1k blocks and 65536 inodes 3 Superblock backups stored on blocks: 4 8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409 5 6 Allocating group tables: done 7 Writing inode tables: done 8 Creating journal (16384 blocks): done 9 Creating 477 huge file(s) with 1024 blocks each: done 10 Writing superblocks and filesystem accounting information: done 11 12 Pass 1: Checking inodes, blocks, and sizes 13 Pass 2: Checking directory structure 14 Pass 3: Checking directory connectivity 15 Pass 4: Checking reference counts 16 Pass 5: Checking group summary information 17 18 Exit status is 0 19 tune2fs -O ^metadata_csum,^uninit_bg test.img 20 Exit status is 0 21 Change in FS metadata: 22 @@ -2,7 +2,7 @@ 23 Last mounted on: <not available> 24 Filesystem magic number: 0xEF53 25 Filesystem revision #: 1 (dynamic) 26 -Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize metadata_csum 27 +Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize 28 Default mount options: user_xattr acl 29 Filesystem state: clean 30 Errors behavior: Continue 31 @@ -33,7 +33,6 @@ 32 Journal inode: 8 33 Default directory hash: half_md4 34 Journal backup: inode blocks 35 -Checksum type: crc32c 36 Journal features: (none) 37 Journal size: 16M 38 Journal length: 16384 39 @@ -47,18 +46,18 @@ 40 Block bitmap at 262 (+261) 41 Inode bitmap at 278 (+277) 42 Inode table at 294-549 (+293) 43 - 21 free blocks, 536 free inodes, 2 directories, 536 unused inodes 44 + 21 free blocks, 536 free inodes, 2 directories 45 Free blocks: 4413-4433 46 Free inodes: 489-1024 47 -Group 1: (Blocks 8193-16384) [INODE_UNINIT] 48 +Group 1: (Blocks 8193-16384) 49 Backup superblock at 8193, Group descriptors at 8194-8197 50 Reserved GDT blocks at 8198-8453 51 Block bitmap at 263 (bg #0 + 262) 52 Inode bitmap at 279 (bg #0 + 278) 53 Inode table at 550-805 (bg #0 + 549) 54 - 0 free blocks, 1024 free inodes, 0 directories, 1024 unused inodes 55 + 0 free blocks, 1024 free inodes, 0 directories 56 Free blocks: 57 Free inodes: 1025-2048 58 -Group 2: (Blocks 16385-24576) [INODE_UNINIT] 59 +Group 2: (Blocks 16385-24576) 60 Block bitmap at 264 (bg #0 + 263) 61 Inode bitmap at 280 (bg #0 + 279) 62 Pass 1: Checking inodes, blocks, and sizes 63 Pass 2: Checking directory structure 64 Pass 3: Checking directory connectivity 65 Pass 4: Checking reference counts 66 Pass 5: Checking group summary information 67 68 Exit status is 0 69
